« previous next »

Author Question: A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16.0 s before the ... (Read 37 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
on: Jul 29, 2018
A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16.0 s before the package strikes the ground, how high above the ground was the package when it was released if air resistance is negligible?
 
  A) 810 m
  B) 1000 m
  C) 1200 m
  D) 1500 m

Question 2

The length of a certain wire is halved while the radius is doubled. What is the change in the resistance of this wire?
 
  A) It stays the same.
  B) It is reduced by a factor of 2.
  C) It is reduced by a factor of 4.
  D) It is reduced by a factor of 8.
  E) It is quadrupled.


amanda_14

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Capo

  • Hero Member
  • *****
  • Posts: 545
Reply #2 on: Jul 29, 2018
TY


amanda_14

  • Sr. Member
  • ****
  • Posts: 342
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

The mammalian heart and the route blood takes through it. The mammalian heart and the route blood takes through it.
Circumduction Circumduction–Moving a body part in a circular motion. Circumduction Circumduction–Moving a body part in a circular motion.
Protraction and Retraction Protraction–Moving a body part forward. Retraction–Moving a body part bac Protraction and Retraction Protraction–Moving a body part forward. Retraction–Moving a body part bac
Mujahideen in Afghanistan stand on top of a Soviet helicopter shot down with U.S.-supplied Stinger ... Mujahideen in Afghanistan stand on top of a Soviet helicopter shot down with U.S.-supplied Stinger ...
Circular petrissage to forehead. Use the thumbs moving in counterclockwise circles. The movement is ... Circular petrissage to forehead. Use the thumbs moving in counterclockwise circles. The movement is ...
Open palmar friction moving back and forth over the lumbar and thoracic regions. Open palmar friction moving back and forth over the lumbar and thoracic regions.
Video: Stroke volume - afterload definition & hypertension

For a complete list of videos, visit our video library